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eliminate a use of Instruction::getPrev(), patch by Gabor Greif in 2005.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36197 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-04-17 17:36:12 +00:00
parent d15dff24c6
commit 4d8c16f15a
1 changed files with 2 additions and 1 deletions
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3
lib/VMCore/Verifier.cpp
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@ -640,7 +640,8 @@ void Verifier::visitPHINode(PHINode &PN) {
// This can be tested by checking whether the instruction before this is
// either nonexistent (because this is begin()) or is a PHI node. If not,
// then there is some other instruction before a PHI.
Assert2(&PN.getParent()->front() == &PN || isa<PHINode>(PN.getPrev()),
Assert2(&PN == &PN.getParent()->front() ||
isa<PHINode>(--BasicBlock::iterator(&PN)),
"PHI nodes not grouped at top of basic block!",
&PN, PN.getParent());